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[Xen-devel] [PATCH 5 of 5] doc: Update the com1, com2 section with pci a

# HG changeset patch
# User Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
# Date 1310493177 14400
# Node ID d42a0c7903e6828cccfc8b9fc7d15ba578019674
# Parent  841e8a1304e707bb9f077d014fb59d46133fbeae
doc: Update the com1,com2 section with pci and amt options.

The "xen: Automatically find serial port on PCI/PCIe and AMT devices."
provides the functionality to probe for the I/O base using the
"pci" and "amt" option. Update the documentation with this fact.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>

diff -r 841e8a1304e7 -r d42a0c7903e6 docs/src/user.tex
--- a/docs/src/user.tex Tue Jul 12 13:52:55 2011 -0400
+++ b/docs/src/user.tex Tue Jul 12 13:52:57 2011 -0400
@@ -2154,8 +2154,8 @@ editing \path{grub.conf}.
   is bad, you would place `badpage=0x12345' on Xen's command line.
 \item [ serial\_tx\_buffer=$<$size$>$ ] Size of serial transmit
   buffers. Default is 16kB.
-\item [ com1=$<$baud$>$,DPS,$<$io\_base$>$,$<$irq$>$
-  com2=$<$baud$>$,DPS,$<$io\_base$>$,$<$irq$>$ ] \mbox{}\\
+\item [ com1=$<$baud$>$,DPS,($<$io\_base$>$$|$pci$|$amt),$<$irq$>$
+  com2=$<$baud$>$,DPS,($<$io\_base$>$$|$pci$|$amt),$<$irq$>$] \mbox{}\\
   Xen supports up to two 16550-compatible serial ports.  For example:
   `com1=9600, 8n1, 0x408, 5' maps COM1 to a 9600-baud port, 8 data
   bits, no parity, 1 stop bit, I/O port base 0x408, IRQ 5.  If some
@@ -2163,6 +2163,10 @@ editing \path{grub.conf}.
   only a prefix of the full configuration string need be specified. If
   the baud rate is pre-configured (e.g., by the bootloader) then you
   can specify `auto' in place of a numeric baud rate.
+  For PCI serial devices, such as Intel AMT you can use the {\bf amt}
+  option to automatically find the I/O base. For PCI serial devices,
+  such as NetMos, you can use {\bf pci} to probe for the I/O base.
+  Both options will set the IRQ to zero - meaning they will poll the device.
 \item [ console=$<$specifier list$>$ ] Specify the destination for Xen
   console I/O.  This is a comma-separated list of, for example:

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